GB/T 12459  弯头 DN 65-490ELampam∙═-1 δ1=5h800-

DN 65-4 90ELampam∙═-1 δ1=5h800-

WN 6"-300 RF S=

wn80-150rf-sch40G/datCH

WN200-600 RF S=16

IF 10-63 FMF T

PL600-25 RF100910-0-40WN50

2 FF 700-1.620δ109Ras0 FF

BL 15-63 RFf b=655-3 10ç- R B=105

BI 900Sh40 R=s/ampamp

PL 400(B)-10 RF1200-1.6f